baber/WOPTO huggingface dataset:
Patent CA-2023516-A1 (CA)
Title: Pulse width modulation control system for a motor
Inventor: KOHNO KEIICHI
IPC: H02P6/08
Filed: 1990-08-17
Abstract: A pulse width modulation (PWM) control system for rotating a spindle motor and a rotatable recording medium at a constant speed. The PWM control system includes a coil phase detecting circuit for detecting a change of stator coil phase based on detecting a rotor magnetic pole and for providing a detecting signal based on said detected phase change; a spindle motor driving circuit for ccntrolling a supply of power to the coils based on the detecting signal; a rotation reference signal generating circuit for generating a rotation reference signal which defines the constant speed of the spindle motor; a real rotation detecting circuit for detecting a real rotation speed of the rotor of the spindle motor and for providing an index signal based on said detection of real rotation; a coil phase selection timing circuit for deciding a selection timing of the coil phase based on the detecting signal and for providing a coil phase selecting signal based on said deciding a selection timing and a microprocessor for determining a pulse Width of a PWM signal based on a phase difference between the rotation reference signal and the index signal, and for providing the PWM control signal with the determined pulse width in synchronization with the deciding of the coil phase selection timing circuit to the spindle motor driving circuit.
Patent CA-2027959-A1 (CA)
Title: Support for an external rearview mirror for motor vehicles
Inventor: FERREIRA DO ESPIRITO SANTO ANT
IPC: B60R1/06
Filed: 1990-10-18
Abstract: A support for an external rearview mirror for motor vehicles that comprises a support rod having an intermediate vertical portion for supporting the mirror and upper and lower transverse portions extending substantially horizontally from opposite ends of the vertical portion. Upper and lower base arrangements connected with respective free ends of the upper and lower transverse portions for attaching the support to a vehicle body. The upper transverse portion is pivotally attached to the upper base arrangement and the lower transverse portion of the support rod is fixedly attached to the lower base arrangement. The lower base arrangement includes a stabilizing mechanism for the mirror support.
Patent CA-2033139-A1 (CA)
Title: Silver-metal oxide composite material and process for producing the same
Inventor: SHIBATA AKIRA
IPC: C22C32/00
Filed: 1990-12-24
Abstract: ABSTRACT OF THE DISCLOSURE         Silver-metal oxide composite material and process for producing the same A silver-metal oxide composite material comprising a sil-ver matrix, (a) from 1 to 20 % by weight, in terms of elemental metal, of an oxide of at least one element selected from the group consisting of Sn, Cd, Zn and In and, optionally, (b) and oxide of Mg, Zr, etc. and/or (c) an oxide of Cd, Sb, etc.; the oxides being dispersed in the form of fine particles with a particle size of not more than about 0.1 µm uniformly and being bound to the silver matrix with no space left, and a process for producing the same.  The composite material is excellent in physical and chemical strengths at high temperatures. The process can produce the composite product even with thick walls, within a markedly short time in high produc-tivity.  The composite material is useful as electrical contact materials and electrode materials for electric welding.
Patent CA-2034726-A1 (CA)
Title: End identifier for multidye yarn
Inventor: YEH LING
IPC: D06P3/24
Filed: 1991-01-22
Abstract: A method of distinguishing two or more variant dye fibers in greige form is disclosed.  The technique involves adding sufficient pigment to one of the fibers to make it visible to the eye.
Patent CA-2042229-A1 (CA)
Title: Molded case circuit breaker modular bell alarm unit
Inventor: BERNIER RICHARD E
IPC: H01H71/46
Filed: 1991-05-09
Abstract: MOLDED CASE CIRCUIT BREAKER  MODULAR BELL ALARM UNIT                      ABSTRACT OF THE DISCLOSURE    A bell alarm unit is attached to the actuator-accessory unit of a molded case circuit breaker.  The bell alarm unit consists of a microswitch, printed wire board connector and external wire conductors integrally encapsulated within a plastic composition to provide strain relief to the electrical connections between the printed wire board and the external. wire conductors.
Patent CA-2044797-A1 (CA)
Title: N-benzyl-n'-phenyl- and phenalkyl-thioureas
Inventor: WALPOLE CHRISTOPHER S J
IPC: A61P29/00
Filed: 1991-06-17
Abstract: ABSTRACT     Compounds of formula II                        (I) wherein one of R1 and R2 is branched lower alkyl and the other is hydrogen or branched lower alkyl, R3 is hydrogen or C1-4alkyl, R4 and R5 are hydrogen, halogen, C1-5alkyl, substituted C1-5alkyl, aryl, substituted or unsubstituted aryl or a group of formula, -COOH, -COOR8 or -CONR9R10, wherein R8 is C1-5alkyl and R8 and R10 are, independently, hydrogen or C1-5alkyl, R6 and R7 have the meanings given for R4 and   R5 or, together with the carbon atom to which they are attached, form a substituted or unsubstituted C3-7cyclo-alkyl group, R is -O-, -S- or -NH- and X is -(CH2)n- wherein n is zero, 1, 2 or 3, and their physiologically hydrolysable and acceptable esters and amides and pharmaceutically acceptable salts thereof, processes for their production and pharmaceutical compositions comprising them.
Patent CA-2045405-A1 (CA)
Title: Lasers a semiconducteur
Inventor: DEVLIN WILLIAM J
IPC: H04B10/29
Filed: 1990-01-15
Abstract: L'invention est un amplificateur de laser à semi-conducteur comportant une couche de guidage (3) et une couche active (4). En mode d'utilisation, une onde lumineuse dans la couche active (4) est en interaction avec la couche de guidage pour réduire la sensibilité de polarisation de l'amplificateur. Il n'est pas nécessaire d'utiliser une couche active courte et épaisse, les dimensions typiques étant une longueur de 250 à 500 µm et une hauteur de 0,2 µm. La structure mesa (15) a une largeur typique de 2 µm, mais peut être plus large.
Patent CA-2045413-A1 (CA)
Title: Tricyclic antipsychotic agents
Inventor: BILLINGTON DAVID C
IPC: A61P25/18
Filed: 1991-06-25
Abstract: ABSTRACT            TRICYCLIC ANTIPSYCHOTIC AGENTS           A class of 2,3,4,4a,9,9a-hexahydro-1H-indeno[2,1-c]pyridine and 2,3,4,4a,5,6,7,11b-octahydro-1H-benzo[3,4]cyclohepta[1,2-c]pyridine derivatives are selective ligands at sigma recognition sites and are therefore useful in the treatment and/or prevention of psychiatric and/or gastrointestinal disorders.
Patent CA-2045979-A1 (CA)
Title: Process for producing aluminum nitride
Inventor: DORN FRIEDRICH-WILHELM
IPC: C01B21/072
Filed: 1991-06-28
Abstract: Process for producing aluminum nitride Abstract of the disclosure:            For  producing  finely  disperse  aluminum  nitride  by reacting hydroxides of aluminum with carbon in a molar ratio of  (1 :  1.5) to (1 : 2.5),   the hydroxides of aluminum are intensively ground together with carbon, in particular carbon black, using a non-aqueous grinding fluid. After the non-aqueous grinding fluid has been separated off from the suspension, the ground material obtained is calcined at 400 to 1000°C, while passing nitrogen through. The material obtained is then treated under intensive contact with nitrogen for 1 to 100 hours at 1400 to 1700°C, before the excess carbon contained in the reaction product is removed by heating to 500 to 900°C in contact with oxygen-containing gases.            The hydroxides of aluminum and the carbon can also be intensively ground separately from one another, using a non-aqueous grinding fluid, and the suspensions obtained can be mixed.
Patent CA-2048127-A1 (CA)
Title: Process for coiler drum alternation in incessant hot rolling and apparatus therefor
Inventor: KOMAMI YUJI
IPC: B21C47/04
Filed: 1991-07-30
Abstract: Disclosed herein is a process for coiler drum alternation in incessant hot rolling in which continual finish hot rolling of rough-rolled sheet bars united on the entry side of a finishing hot rolling mill is carried out by tilting upper and lower tillable pinch rolls disposed on the exit side of a shear on the downstream of the finishing mill, thereby changing the traveling direction of the steel strip so that a leading end formed upon cutting the strip will be directed toward the next coiler drum to be used, and thereafter cutting the strip. This process enables an easy and assured alternation of coiler drums, thereby contributing to increases in the speed and efficiency of incessant hot rolling.
Patent CA-2048609-A1 (CA)
Title: Treatment for cocaine addiction
Inventor: WEISS SUSAN R B
IPC: A61K31/55
Filed: 1990-03-01
Abstract: Toxic effects of cocaine can be blocked by chronic administration of carbamazepine in amount sufficient to achieve a 4-12 µg/ml blood concentration. In addition, the dosing with carbamazepine blocks the reinforcing effects of the cocaine, thus decreasing the likelihood of development of addiction to cocaine.
Patent CA-2052279-A1 (CA)
Title: Cyclohexylphenylpyrimidines, process for their preparation, and their use in liquid-crystalline mixtures
Inventor: ILLIAN GERD
IPC: C09K19/40
Filed: 1991-09-26
Abstract: Abstract of the disclosure Cyclohexylphenylpyrimidines, a process for their prepara-tion, and their use in liquid-crystalline mixtures Cyclohexylphenylpyrimidines of the formula (I)                   (I) in which R1     is straight-chain or branched, chiral or achiral alkyl or alkenyl having 2 to 16 carbon atoms, in which one or two nonadjacent -CH2- groups may be replaced by -O-, -S-, -CO-, -COO-, -OCO-, -Si(CH3)2- or -C(CH3)2-, and in which one or more hydrogen atoms of the alkyl or alkenyl radical may be replaced by fluorine atoms, and in which the terminal CH3 group of the alkyl may also be replaced by   , R2     is straight-chain or branched, chiral or achiral alkyl having 1 to 10 carbon atoms, are particularly suitable components for ferroelectric liquid-crystal mixtures since they result in favorable properties, such as, for example, high contrast, when used in electrooptical switching and display devices.
Patent CA-2054074-A1 (CA)
Inventor: FALLAS DAVID M
IPC: B65B57/14
Filed: 1991-10-23
Abstract: An apparatus and method for collecting flexible bagged product into groups having desired spacing characteristics and for packing such product groups in receptacles is disclosed.  In a first embodiment, the apparatus of the present invention includes an infeed belt for transporting product, a collecting belt operatively aligned with the infeed belt for collecting product from the infeed in product groups, product detecting apparatus for detecting units of product passing from the infeed belt to the collecting belt, means for transporting the product groups from the collecting belt to receptacles, and a controller operatively connected to the detecting apparatus and the collecting belt for advancing the collecting belt a preselected distance for each product which passes onto the collecting belt until a group containing the preselected number of product is collected on the collecting belt, and for activating the collecting belt to advance the collected product groups to a transporting station.  In a second embodiment of the present invention, product groups having the desired characteristics (i.e. number and time separation) are collected by varying the speed of the collecting belt, as opposed to the "stop/start" operation of the first embodiment.  A third embodiment of the present invention combines selected components of the first and second embodiments and comprises a variable speed spacing belt operatively aligned with an infeed belt for creating a preselected time separation between product groups, and a collecting belt operatively aligned with the spacing belt for collecting product from the spacing belt in product groups.  In a preferred embodiment, the transporting apparatus of the present invention comprises an oscillating conveyor for selectively depositing product groups into receptacles for shipping and handling.
Patent CA-2055119-A1 (CA)
Title: Apparatus for identifying a container carrier
Inventor: HURLIMANN HANS-JORG
IPC: B01L9/06
Filed: 1991-11-07
Abstract: Abstract A device for identifying a container carrier (11) for an automatic analytical apparatus, the carrier having an array of fields (21-28) on a flange (12), some of the fields being transparent and the other fields being opaque, the device also containing an electro-optical arrangement to detect whether each of the fields is transparent or opaque.       In order to increase the reliability of the device in the identification of the container carriers, it is characterized in that the electro-optical arrangement comprises the following components:    (a) a light source (14), (b) a plurality of light receivers (31-38) each associated with one of the fields (21 28), (c) a light guide (15) apt to receive a light beam generated by the light source and to derive from said beam a plurality of rays of light (41-48) each directed towards one of the fields (21-28) and reaching their associated light receivers through the transparent fields.
Patent CA-2055759-A1 (CA)
Title: Simplified motor brake
Inventor: LINDNER BERNARD J
IPC: F16D65/00
Filed: 1991-11-18
Abstract: SIMPLIFIED MOTOR BRAKE        ABSTRACT A motor brake mechanism (10) includes retain-ing structure (46) permitting removal and replacement of friction discs (16, 18) without disassembling the brake mechanism.  When the brake mechanism is detached from the motor, removal of a single bolt (46) permits radial removal and replacement of the friction discs.  Minimiz-ing of brake drag is enabled by adding low force compres-sion springs (162, 164, 166, 168, 170, 172) without otherwise modifying the structure which prevents rotation of the pressure plates (38, 40) relative to the end plate (28) of the brake mechanism (10), wherein a first set of studs (42, 44, 46) provide both functions of non-rotat-ably mounting the pressure plates (38, 40) to the end plate (28) and mounting the low force compression springs, all separate from another set of studs (70, 72) mounting the brake lever (68) to the end plate (28).  The brake solenoid (104) is mounted on another set of studs (122, 124) by resilient shock absorbers (126, 128, 130, 132) which perform dual functions of absorbing mechanical shock from the solenoid plunger (106) at the end of its travel stroke and minimizing solenoid buzz.  The latter function is provided in conjunction with simplified single nut (148, 150) adjustment of the solenoid abutment surface (120).  Separate cover mounting studs are elimi-nated, and the cover (98) is mounted on the same set of studs (70 and 72) which mount the brake lever (68). Improved and simplified pivot bearings are provided by hardened drive pins (64 and 66) providing substantially point contact and facilitating smooth pivotal bearing movement of the brake lever (68).  A simplified manual release (182) includes a spacer (206) accommodating two friction discs (16, 18).
Patent CA-2060569-A1 (CA)
Title: 1,2,4-oxadiazole derivatives having monoamine oxidase b enzyme-inhibitory activity and method for preparing same
Inventor: TOYOFUKU HATSUNORI
IPC: A61K31/5377
Filed: 1992-02-03
Abstract: Abstract of the Disclosure A 1,2,4-oxadiazole derivative is represented by the following general formula (I):              (I) wherein R1 represents a lower alkyl or cycloalkyl group, a lower alkyl group substituted with a halogen atom, a lower alkylamino group or a phenyl group; R2 represents a hydrogen atom, a lower dialkylamino group, a cyclic alkylamino group, a cyclic amino group having an oxygen or nitrogen atom in the ring, a phenyl group which may be substituted with a halogen atom, a pyridyl group, an imidazolyl group,  an alkylimidazolyl group, a benzimidazolyl group or a 2-oxopyrrodinyl group; and n is 1, 2 or 3. The derivative. has excellent monoamine oxidase-inhibitory activity and is effective as a medicine for treating Parkinson's disease.
Patent CA-2062656-A1 (CA)
Title: Process for reducing the residual monomer content in aqueous plastics dispersions based on polyvinyl ester
Inventor: HUTH HANS-ULLRICH
IPC: C08F6/00
Filed: 1992-03-11
Abstract: HOECHST AKTIENGESELLSCHAFT - Werk KALLE-ALBERT     Abstract of the disclosure: Process for reducing the residual monomer content in aqueous plastics dispersions based on polyvinyl ester Preparation of aqueous plastics dispersions which contain vinyl ester polymers or vinyl ester copolymers and have reduced  contents  of  undesirable  preparation-related residual monomeric vinyl esters and, where appropriate, acetaldehyde,  from corresponding starting dispersions such as are obtainable by customary polymerization or copolymerization methods from ethylenically unsaturated monomers, by selective alkaline hydrolysis of the resi-dual monomeric vinyl esters which can be hydrolyzed under alkaline conditions and if appropriate oxidation of the acetaldehyde to acetic acid in the aqueous dispersions.            Use of the plastics dispersions as binders in low-emis-sion or emission-free aqueous formulations, for example for paints, coatings, plaster mortars, adhesives, sizing agents for paper, binders for non-woven fibers, textile auxiliaries and the like, in particular for applications in interior rooms or in closed rooms.
Patent CA-2064963-A1 (CA)
IPC: B66F9/075
Filed: 1992-04-02
Abstract: A support apparatus for the operator's cab of an overhead crane. The crane has a rigid depending mast and an intermediate mast and carriage vertically movable on the rigid mast for lifting and carrying a load.  A hoist is mounted on the crane and attached to the carriage for raising and lowering the carriage, the intermediate mast and the load at normal operating speeds.  The support apparatus includes a first support affixed to the cab and the intermediate mast for supporting the cab on the intermediate mast during normal operating speeds of the intermediate mast.  The first support permits detaching the cab from the intermediate mast upon the occurrence of an excessive lowering operating speed of the intermediate mast.  A second support affixed to the cab and to an overhead support of the crane then supports the cab in a suspended manner and the intermediate mast drops toward the floor below the crane without the cab.   A sensing mechanism may also be provided for detecting excessive lowering overspeed of the intermediate mast and producing an indication of the overspeed to the second support.          The second support is responsive to the excessive lowering speed indication of the sensing mechanism to support the cab.
Patent CA-2065218-A1 (CA)
Title: Process for the preparation of 9-deoxo-8a-aza-8a-homoerythromycin a and its 8a-alkyl derivatives
Inventor: WILKENING ROBERT R
IPC: A61P31/04
Filed: 1992-04-06
Abstract: TITLE OF THE INVENTION   8a-aza-8a-HOMOERYTHROMYCIN A AND ITS 8a-ALKYL DERIVATIVES            ABSTRACT OF THE INVENTION          A method of synthesizing compounds of the general structural formula   Where R is hydrogen, hydroxyl or 1-10 carbon alkyl and n is 0 or 1, and the pharmaceutically acceptable salts thereof.  These compounds are macrolides, useful as antibiotics, and also useful as intermediates to the synthesis of other macrolide antibotics.
Patent CA-2065758-A1 (CA)
Title: Dual port oscillator for two-stage direct conversion receiver
Inventor: OHGA TADASHI
IPC: H03B1/00
Filed: 1992-04-10
Abstract: A two-stage direct conversion receiver. A first mixer (13) converts the incoming signal to an intermediate frequency (IF) signal. A second mixer (16) converts the IF signal to a baseband signal. A detector (17), receiver logic circuit (18), and alerting device circuit (19) act upon the baseband output signal. A two port oscillator (14) provides a fundamental frequency output (FO) and a tripled output frequency (3 FO). The tripled output frequency is again tripled (9 FO) by a frequency multiplier (15) and is provided as a mixing signal to the first mixer ( 13). The fundamental frequency output is provided to a phase locked loop (20, 21, 22). The output frequency (FV) of the phase locked loop is doubled (2 FV) by a frequency multiplier (23) and provided to a phase shift circuit (24). The output of the phase shift circuit (24) is provided as the second mixing signal to the second mixer (16). The phase locked loop comprises a phase locked loop controller (20), a phase locked loop filter (21), and a voltage controlled oscillator (22). The main oscillator (14) is configured as a crystal controlled Colpitts oscillator, which has an emitter resonant circuit selected to produce oscillation at the fundamental frequency, and a collector resonant circuit selected to extract the third harmonic of the fundamental oscillation frequency. A single active device can therefore provide both the fundamental frequency and the third harmonic frequency. Calibration of the receiver is effected by simply tuning the oscillator (14) to produce a baseband output signal at the output of the second mixer (16). Single step calibration is therefore effected because the voltage controlled oscillator (22) is locked to the main oscillator (14).
Patent CA-2068088-A1 (CA)
Title: Method of water-proofing a connected portion of electric wires
Inventor: OOKUMA YASUYUKI
IPC: H01R13/52
Filed: 1992-05-06
Abstract: A method of water-proofing a connected portion of electric wires is disclosed which improves the efficiency of water-proofing and prevents the connected portion from becoming enlarged after working.  An injector 10 filled with a water-proof insulation adhesion agent 11 is disposed above a tapping roll 7 of a known tape winder so that a nozzle 9 of the injector 10 is directed to the roll 7.  A water-proof sheet 1 cut in a desired size is fed on the tapping roll 7. A predetermined amount of the adhesion agent is dropped on the sheet 1 from the nozzle 9 to form a deposit 2 of the adhesion agent.  A supplementary sheet 4 made of a water-proof insulation material is applied to the connected portion 3 and then the connected portion 3 with the supplementary sheet 4 is put on the deposit 2 to form a sandwich type construction in which the portion 3 is disposed between the sheets 1 and 4.  Then, the connected portion 3 is pushed down into a slot 8 of the tapping roll 7.  The sheets 1 and 4 are wound around the connected portion 3 to seal it by rotating the roll 7.
Patent CA-2068499-A1 (CA)
Title: Installation for charging a shaft furnace
Inventor: MAILLIET PIERRE
IPC: F27B1/20
Filed: 1992-05-12
Abstract: ABSTRACT An installation is proposed for charging a shaft furnace comprising a rotating and pivoting distribution chute. The chute is supported in a removable manner by two lateral side plates  (4?a),  (4?b)  of a "U"-shaped stirrup piece (4?8). When a first ring  (4?0)  securely fastened to a dome (5?8) performs a relative movement with respect to a second ring (4?2), the dome (5?8), via an arm (6?4) causes the stirrup piece (4?8) to pivot about its horizontal axis which transmits this pivoting to the chute.        The end of the arm (6?4) pivots, to this end, in a runner block (6?2) sliding in a groove (6?0) of the dome (5>8).      Fig. 5.
Patent CA-2070179-A1 (CA)
Title: Ball roller skate
Inventor: EKSTRAND BENGT
IPC: A63C17/08
Filed: 1991-10-02
Abstract: ABSTRACT OF THE DISCLOSURE      The invention is for a type of roller skate, which is named ball roller skate.  A ball roller skate gives the skater freedom to move and make movements in any freely chosen direction.  A ball roller skate according to the invention contacts the ground by means of a spherical ball which is free to rotate in any direction.  There can also be other balls having various functions both to carry the bigger so called skating ball and to make possible braking and various movements.  Braking balls can affect the bigger skating ball, either through a separating wall between the two balls or through another ball.  These two means of affecting can also be combined.  All of the balls are suitably mounted in a fastening body having a number of cavities, the forms of which essentially follow that of the balls of the ball roller skate.